bash-linux-v2

Bash Linux Patterns

Overview

This public intake copy packages plugins/antigravity-awesome-skills/skills/bash-linux from https://github.com/sickn33/antigravity-awesome-skills into the native Omni Skills editorial shape without hiding its origin.

Use it when the operator needs the upstream workflow, support files, and repository context to stay intact while the public validator and private enhancer continue their normal downstream flow.

This intake keeps the copied upstream files intact and uses the external_source block in metadata.json plus ORIGIN.md as the provenance anchor for review.

Bash Linux Patterns > Essential patterns for Bash on Linux/macOS. ---

Imported source sections that did not map cleanly to the public headings are still preserved below or in the support files. Notable imported sections: 1. Operator Syntax, 2. File Operations, 5. Environment Variables, 6. Network, 7. Script Template, 8. Common Patterns.

When to Use This Skill

Use this section as the trigger filter. It should make the activation boundary explicit before the operator loads files, runs commands, or opens a pull request.

• This skill is applicable to execute the workflow or actions described in the overview.
• Use when the request clearly matches the imported source intent: Bash/Linux terminal patterns. Critical commands, piping, error handling, scripting. Use when working on macOS or Linux systems.
• Use when the operator should preserve upstream workflow detail instead of rewriting the process from scratch.
• Use when provenance needs to stay visible in the answer, PR, or review packet.
• Use when copied upstream references, examples, or scripts materially improve the answer.
• Use when the workflow should remain reviewable in the public intake repo before the private enhancer takes over.

Operating Table

Situation	Start here	Why it matters
First-time use	metadata.json	Confirms repository, branch, commit, and imported path through the external_source block before touching the copied workflow
Provenance review	ORIGIN.md	Gives reviewers a plain-language audit trail for the imported source
Workflow execution	SKILL.md	Starts with the smallest copied file that materially changes execution
Supporting context	SKILL.md	Adds the next most relevant copied source file without loading the entire package
Handoff decision	## Related Skills	Helps the operator switch to a stronger native skill when the task drifts

Workflow

This workflow is intentionally editorial and operational at the same time. It keeps the imported source useful to the operator while still satisfying the public intake standards that feed the downstream enhancer flow.

1. Task - Command
2. List processes - ps aux
3. Find by name - ps aux \ - grep node
4. Kill by PID - kill -9
5. Find port user - lsof -i :3000
6. Kill port - kill -9 $(lsof -t -i :3000)
7. Background - npm run dev &

Imported Workflow Notes

Imported: 3. Process Management

Task	Command
List processes	ps aux
Find by name	ps aux | grep node
Kill by PID	kill -9 <PID>
Find port user	lsof -i :3000
Kill port	kill -9 $(lsof -t -i :3000)
Background	npm run dev &
Jobs	jobs -l
Bring to front	fg %1

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Imported: 4. Text Processing

Core Tools

Tool	Purpose	Example
grep	Search	grep -rn "TODO" src/
sed	Replace	sed -i 's/old/new/g' file.txt
awk	Extract columns	awk '{print $1}' file.txt
cut	Cut fields	cut -d',' -f1 data.csv
sort	Sort lines	sort -u file.txt
uniq	Unique lines	sort file.txt | uniq -c
wc	Count	wc -l file.txt

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Imported: 1. Operator Syntax

Chaining Commands

Operator	Meaning	Example
;	Run sequentially	cmd1; cmd2
&&	Run if previous succeeded	npm install && npm run dev
||	Run if previous failed	npm test || echo "Tests failed"
|	Pipe output	ls | grep ".js"

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Examples

Example 1: Ask for the upstream workflow directly

Use @bash-linux-v2 to handle <task>. Start from the copied upstream workflow, load only the files that change the outcome, and keep provenance visible in the answer.

Explanation: This is the safest starting point when the operator needs the imported workflow, but not the entire repository.

Example 2: Ask for a provenance-grounded review

Review @bash-linux-v2 against metadata.json and ORIGIN.md, then explain which copied upstream files you would load first and why.

Explanation: Use this before review or troubleshooting when you need a precise, auditable explanation of origin and file selection.

Example 3: Narrow the copied support files before execution

Use @bash-linux-v2 for <task>. Load only the copied references, examples, or scripts that change the outcome, and name the files explicitly before proceeding.

Explanation: This keeps the skill aligned with progressive disclosure instead of loading the whole copied package by default.

Example 4: Build a reviewer packet

Review @bash-linux-v2 using the copied upstream files plus provenance, then summarize any gaps before merge.

Explanation: This is useful when the PR is waiting for human review and you want a repeatable audit packet.

Best Practices

Treat the generated public skill as a reviewable packaging layer around the upstream repository. The goal is to keep provenance explicit and load only the copied source material that materially improves execution.

• Keep the imported skill grounded in the upstream repository; do not invent steps that the source material cannot support.
• Prefer the smallest useful set of support files so the workflow stays auditable and fast to review.
• Keep provenance, source commit, and imported file paths visible in notes and PR descriptions.
• Point directly at the copied upstream files that justify the workflow instead of relying on generic review boilerplate.
• Treat generated examples as scaffolding; adapt them to the concrete task before execution.
• Route to a stronger native skill when architecture, debugging, design, or security concerns become dominant.

Troubleshooting

Problem: The operator skipped the imported context and answered too generically

Symptoms: The result ignores the upstream workflow in plugins/antigravity-awesome-skills/skills/bash-linux, fails to mention provenance, or does not use any copied source files at all. Solution: Re-open metadata.json, ORIGIN.md, and the most relevant copied upstream files. Check the external_source block first, then restate the provenance before continuing.

Problem: The imported workflow feels incomplete during review

Symptoms: Reviewers can see the generated SKILL.md, but they cannot quickly tell which references, examples, or scripts matter for the current task. Solution: Point at the exact copied references, examples, scripts, or assets that justify the path you took. If the gap is still real, record it in the PR instead of hiding it.

Problem: The task drifted into a different specialization

Symptoms: The imported skill starts in the right place, but the work turns into debugging, architecture, design, security, or release orchestration that a native skill handles better. Solution: Use the related skills section to hand off deliberately. Keep the imported provenance visible so the next skill inherits the right context instead of starting blind.

Related Skills

• @00-andruia-consultant - Use when the work is better handled by that native specialization after this imported skill establishes context.
• @00-andruia-consultant-v2 - Use when the work is better handled by that native specialization after this imported skill establishes context.
• @10-andruia-skill-smith - Use when the work is better handled by that native specialization after this imported skill establishes context.
• @10-andruia-skill-smith-v2 - Use when the work is better handled by that native specialization after this imported skill establishes context.

Additional Resources

Use this support matrix and the linked files below as the operator packet for this imported skill. They should reflect real copied source material, not generic scaffolding.

Resource family	What it gives the reviewer	Example path
references	copied reference notes, guides, or background material from upstream	references/n/a
examples	worked examples or reusable prompts copied from upstream	examples/n/a
scripts	upstream helper scripts that change execution or validation	scripts/n/a
agents	routing or delegation notes that are genuinely part of the imported package	agents/n/a
assets	supporting assets or schemas copied from the source package	assets/n/a

Imported Reference Notes

Imported: 2. File Operations

Essential Commands

Task	Command
List all	ls -la
Find files	find . -name "*.js" -type f
File content	cat file.txt
First N lines	head -n 20 file.txt
Last N lines	tail -n 20 file.txt
Follow log	tail -f log.txt
Search in files	grep -r "pattern" --include="*.js"
File size	du -sh *
Disk usage	df -h

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Imported: 5. Environment Variables

Task	Command
View all	env or printenv
View one	echo $PATH
Set temporary	export VAR="value"
Set in script	VAR="value" command
Add to PATH	export PATH="$PATH:/new/path"

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Imported: 6. Network

Task	Command
Download	curl -O https://example.com/file
API request	curl -X GET https://api.example.com
POST JSON	curl -X POST -H "Content-Type: application/json" -d '{"key":"value"}' URL
Check port	nc -zv localhost 3000
Network info	ifconfig or ip addr

---

Imported: 7. Script Template

#!/bin/bash
set -euo pipefail  # Exit on error, undefined var, pipe fail

# Colors (optional)
RED='\033[0;31m'
GREEN='\033[0;32m'
NC='\033[0m'

# Script directory
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Functions
log_info() { echo -e "${GREEN}[INFO]${NC} $1"; }
log_error() { echo -e "${RED}[ERROR]${NC} $1" >&2; }

# Main
main() {
    log_info "Starting..."
    # Your logic here
    log_info "Done!"
}

main "$@"

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Imported: 8. Common Patterns

Check if command exists

if command -v node &> /dev/null; then
    echo "Node is installed"
fi

Default variable value

NAME=${1:-"default_value"}

Read file line by line

while IFS= read -r line; do
    echo "$line"
done < file.txt

Loop over files

for file in *.js; do
    echo "Processing $file"
done

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Imported: 9. Differences from PowerShell

Task	PowerShell	Bash
List files	Get-ChildItem	ls -la
Find files	Get-ChildItem -Recurse	find . -type f
Environment	$env:VAR	$VAR
String concat	"$a$b"	"$a$b" (same)
Null check	if ($x)	if [ -n "$x" ]
Pipeline	Object-based	Text-based

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Imported: 10. Error Handling

Set options

set -e          # Exit on error
set -u          # Exit on undefined variable
set -o pipefail # Exit on pipe failure
set -x          # Debug: print commands

Trap for cleanup

cleanup() {
    echo "Cleaning up..."
    rm -f /tmp/tempfile
}
trap cleanup EXIT

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Remember: Bash is text-based. Use && for success chains, set -e for safety, and quote your variables!

Imported: Limitations

• Use this skill only when the task clearly matches the scope described above.
• Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
• Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.